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No Model F A. BURNHAM' STEAM, WATI'IR, 0R FLUID VALVE.

No. 469,230. Patented Feb. 23, 1892.

L'fgyzessesn Jaw/kiem 0, uw @ZM/A 01%/ ,w @2% UNITED STATES PATENTOFFICE.

FRANK A. BURNHAM, CE BATTLE CREEK, MICHIGAN, ASSIGNOR TC) THE BATTLECREEK MACHINERY COMPANY, OE SAME PLACE.

STEAM, WATER, ORFLUID VALVE. I

SPECIFICATION forming part of Letters Patent No. 469,230, dated February23, 1892.

Application filed September 1'7, 1891. Serial No. 405,940. (No model.)

To @ZZ whom, it may concern.-

Beit known that I, FRANK A. BURNHAM, a citizen of the United States,residing at Battle Creek, in the county of Calhoun and State ofMichigan, have invented certain new and useful Improvements in Steam,Vater, or Fluid Valves; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to theaccompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

This invention relates to steam, water, or fluid Valves, and theimprovement herein illustrated and described is particularly1 designedfor use in connection with a certain invention described and shown inLetters Patent issued to Foster M. Metcalf, bearing date M ay 12, 1891,and numbered 452,312, the better adapting said patented invention tocertain circumstances and conditions hereinafter appearing.

The objects attained by this improvement are twofold, viz: rst, toprovide means whereby the valve shall be forcibly held or locked fast tothe face of the valve-seat upon both ports thereof, instead of beingflexibly held by means of aspring or equivalent device, as in saidpatent shown, in order that the slight lifting of said valve at timeswhen the pump is subjected to high or varying atmospheric pressure, aswhen a high lift of water is encountered, may be obviated.

The second part of the present improvement consists in the substitutionof a solid valve in place of the perforated diskvalve in said patentemployed, so constructed, arranged, and operating that room within thevalve-chamber is secured for fixing therein a valve-engaginglockingplate, whereby the throw of the valve is fixed and controlled atthe same time that the valve-face is forcibly fixed or locked tightly onits seat at each extremity of the throw of its operating-lever, ashereinbefore indicated.

In the accompanying drawings, forming part of this specification, Figure1 corresponds with the same portion of the valve-casing shown anddescribed in Patent No. 452,312

to Metcalf, already referred to, except that in the present Fig. 1 mynovel oscillating valve is substituted for the former disklvalve, andinstead of the coil-spring of the aforesaid valvestem and outside stopsfixed inside stops are employed, and absolute contact of the valve withits seat at all times and determination of the throw of the valve ismaintained. Figs. 2, 3, and et are detached details, the first two beingsimply side views, while Fig. a is a vertical section of the stop orvalve engaging and locking plate, already referred to.

The letter A represents the oscillating valve, provided with stem orshaft a, to the outermost extremity of which the lever Z is' attached,as shown in the Metcalf patent cited, while the upper side of the saidvalve A is provided with the double -inclined plane block b.

B is the valve-engaging plate, preferably made in horseshoe form, withits extending open ends or heels projecting parallel with, but suitablydistant from, the valve-seat to afford room for the valve between saidarms or heels and the seat of said valve. These projecting heels of theplate or stop B are suitably beveled on their under surfaces at g g, andabout one-half part of the open arms or heels of the horseshoe-shapedplate B pro- Vides a chamber g between the valve and its seat (throughwhich latter the valve-stem a, passes) to make room for the said valveA, stops, and locks g g, which engage with the top of the valve-blocks bat either extremity of the valve oscillations, whereby the valve isforcibly held to its seat, as by a lock. (See Fig. 1.) The valve-stem orshaft a passes through the casing or plate B about centrall y of saidplate B', which is secured to the pump or engine by bolts or othersuitable se curing means passing through the holes t, while the toe partof the horseshoe-shaped plate or stop B is fixed firmly to the casingsby means of screws s s, passing through the thicker toe portion of saidplate B into the casing, as shown at d d, whereby room for the valve issecured between the arms of said stop-plate, as shown at g. (See Eig.4.)

The ports C C N N and chamber K of the Metcalf patent, No. l152,312,having precisely similar situations and performing identical functionswith which the present improven ment acts, in accord at all times andunder all conditions, it only now remains to describe the mode ofoperation of the novel valve, hereinbefore shown in contradistinction tothat of the disk-valve of said patent, as follows, to Wit: With thelever Z in the position shown in Fig. l the central highest point of theincline-plane block b ot' the oscillating valve A, impinging upon thebeveled under surface of the heel of plate B, covering the valve andport thereunder, tightly locks the said valve-face down to its seat N,as is evi? dent, so that no pressure of atmosphere or eX traordinarylift of pump can canse even the slightest leak or lift ot'said valve.

Having thus fully illustrated and described my improvement and pointedout its peculiar advantages and mode of operation as compared withanalogous devices, what I claim, and desire to secure by Letters Patentof the United States, is*

l. The casing or side plate ot' the valvechamber, the oscillating valveA, provided with shaft or stem ct and the double-incline plane b, thevalve-engaging plate B, provided with cham bered and beveled arms g g,having the outer end of said oscillating valve-stem a, substantially asshown, illustrated, and described. Y

2. The casing, the solid valve provided With stem projecting through thecasing and valveseat, said valve having an inclined block,actuating-lever Z, fixed to said stem, and the iXed stop-plate B,engaging said inclined block, sulostantiallT as shown, illustrated, anddescribed. l

3. In a valve, the combination, with the casing and valve opening andseat, of the solid oscillating valve having an inclined pro jection onone face and a stop-plate fixed to said casing and adapted to engagesaid inclined proj eotion, said stop-plate being formed to provide achamber Within which said valve operates.

In testimony Whereotl I affix my signature in presence of two Witnesses.

FRANK A. BURNHAM. lVitnesses:

O. SooTT CLARK, GEO. W. NIoHoLs.

